Usps Postcard Clear Zones 5 X 7. We have the answer to this question and more in this guide to printing and mailing postcards. Some printing services just want to maximize the number USPS says that paper that is about as thick as an index card is thick enough.
Postcards force you to focus your message into short powerful phrases that zero in on the essence of your promotion, get your audience engaged quickly and.
When they arrive in the mail, there's the message -- no envelope to If your mailpiece does not meet the dimensions above, then the Postal Service considers it a letter and letter-size postage is charged.
Some people prefer how a slightly more boxy postcard looks. USPS.com provides a tool to quickly find out which zone your package falls into depending on the starting location and ending location of where it will travel. From there you can easily check its regional rate.